Sodium selenate: Difference between revisions

Latest revision as of 11:00, 15 February 2025

Sodium selenate[edit]

Sodium selenate is a chemical compound with the formula Na₂SeO₄. It is the sodium salt of selenate, and it is a colorless, water-soluble solid. Sodium selenate is an important compound in the field of chemistry and has various applications in industry and research.

Chemical properties[edit]

Sodium selenate is a selenate salt, which means it contains the selenate ion, SeO₄^2_. It is analogous to sodium sulfate, Na₂SO₄, with selenium replacing sulfur. Sodium selenate is highly soluble in water and forms a neutral solution. It is a strong oxidizing agent and can react with reducing agents to form elemental selenium or other selenium compounds.

Production[edit]

Sodium selenate can be produced by the oxidation of selenium dioxide (SeO₂) with a strong oxidizing agent such as hydrogen peroxide (H₂O₂) in the presence of sodium hydroxide (NaOH). The reaction can be represented as follows:

SeO₂ + H₂O₂ + 2 NaOH _ Na₂SeO₄ + 2 H₂O

Applications[edit]

Sodium selenate is used in various applications, including:

Agriculture: It is used as a fertilizer additive to provide selenium, an essential micronutrient for plants and animals.
Glass manufacturing: Sodium selenate is used as a decolorizing agent in the production of glass.
Chemical synthesis: It serves as a precursor for the synthesis of other selenium compounds.

Safety and toxicity[edit]

Sodium selenate is toxic in large doses and should be handled with care. It can cause selenium poisoning if ingested in significant amounts. Symptoms of selenium toxicity include gastrointestinal distress, hair loss, and neurological damage. Proper safety measures should be taken when handling sodium selenate, including the use of personal protective equipment and working in a well-ventilated area.

Related pages[edit]

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-'''Sodium selenate''' is a chemical compound with the formula Na2SeO4. It is a colorless, water-soluble salt of [[selenium]]. Sodium selenate is primarily used in the manufacturing of colorless glass, as a decolorizing agent, and in the production of some [[dyes]] and [[pigments]]. It is also used as a source of selenium in some animal feeds and fertilizers, due to its high solubility in water.
+{{DISPLAYTITLE:Sodium selenate}}
-==Chemical Properties==
+== Sodium selenate ==
-Sodium selenate is an [[oxidizing agent]] and can react with reducing agents to generate heat and products that may be gaseous. The products of these reactions can cause burns or be toxic if inhaled. It is soluble in water and its solutions are acidic.
+[[File:Natriumselenat.svg|thumb|right|Structural formula of sodium selenate]]
+'''Sodium selenate''' is a chemical compound with the formula Na<sub>2</sub>SeO<sub>4</sub>. It is the sodium salt of [[selenate]], and it is a colorless, water-soluble solid. Sodium selenate is an important compound in the field of chemistry and has various applications in industry and research.
-==Production==
+== Chemical properties ==
-Sodium selenate can be produced by oxidizing [[sodium selenite]] with [[nitric acid]]. This reaction produces sodium selenate and nitrogen dioxide. The sodium selenate can then be purified by crystallization.
+Sodium selenate is a [[selenate]] salt, which means it contains the selenate ion, SeO<sub>4</sub><sup>2_</sup>. It is analogous to [[sodium sulfate]], Na<sub>2</sub>SO<sub>4</sub>, with selenium replacing sulfur. Sodium selenate is highly soluble in water and forms a neutral solution. It is a strong oxidizing agent and can react with reducing agents to form elemental selenium or other selenium compounds.
-==Uses==
+== Production ==
-Sodium selenate is used in a variety of applications. It is used in the glass industry as a decolorizing agent. It is also used in the production of some dyes and pigments. In agriculture, it is used as a source of selenium in animal feeds and fertilizers. Sodium selenate is also used in some photographic processes.
+Sodium selenate can be produced by the oxidation of [[selenium dioxide]] (SeO<sub>2</sub>) with a strong oxidizing agent such as [[hydrogen peroxide]] (H<sub>2</sub>O<sub>2</sub>) in the presence of sodium hydroxide (NaOH). The reaction can be represented as follows:
-==Safety==
+: SeO<sub>2</sub> + H<sub>2</sub>O<sub>2</sub> + 2 NaOH _ Na<sub>2</sub>SeO<sub>4</sub> + 2 H<sub>2</sub>O
-Exposure to sodium selenate can cause a variety of health effects. Ingestion can cause nausea, vomiting, and diarrhea. Inhalation can cause coughing, shortness of breath, and chest pain. Long-term exposure can lead to selenosis, a condition characterized by hair loss, nail changes, and nerve damage.
-==See Also==
+== Applications ==
+Sodium selenate is used in various applications, including:
+* '''Agriculture''': It is used as a [[fertilizer]] additive to provide selenium, an essential micronutrient for plants and animals.
+* '''Glass manufacturing''': Sodium selenate is used as a decolorizing agent in the production of glass.
+* '''Chemical synthesis''': It serves as a precursor for the synthesis of other selenium compounds.
+== Safety and toxicity ==
+Sodium selenate is toxic in large doses and should be handled with care. It can cause selenium poisoning if ingested in significant amounts. Symptoms of selenium toxicity include gastrointestinal distress, hair loss, and neurological damage. Proper safety measures should be taken when handling sodium selenate, including the use of personal protective equipment and working in a well-ventilated area.
+== Related pages ==
 * [[Selenium]]
-* [[Sodium selenite]]
+* [[Selenate]]
-* [[Selenosis]]
+* [[Sodium sulfate]]
+* [[Selenium dioxide]]
-==References==
-<references />
-[[Category:Chemical compounds]]
 [[Category:Selenium compounds]]
 [[Category:Sodium compounds]]
-{{Chem-stub}}
+[[Category:Oxidizing agents]]